Battery and electric device

Abstract

Disclosed in the present application are a battery and an electric device. The battery is configured to be connected to brackets. The battery comprises a case. The case comprises a first case and a second case, wherein in a first direction, the first case and the second case are connected to each other, and the first case and the second case jointly define a chamber for accommodating a battery cell. The first case is provided with a first connecting face and second connecting faces, which face the first direction, the first connecting face being connected to the second case, and the second connecting faces being configured to be connected to the brackets. The positions of the first connecting face and the second connecting faces in the first direction do not overlap. The technical solution provided in the present application can improve the volumetric energy density of the battery.

Description

Batteries and electrical devices CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202420286449.8, filed on February 6, 2024, entitled “Battery and Electrical Device,” and the entire contents of the above application are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0004] In the development of battery technology, how to improve the energy density of batteries is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present application provides a battery and an electrical device. The technical solution provided in the present application can improve the volume energy density of the battery.

[0006] This application is achieved through the following technical solutions:

[0007] In a first aspect, the present application provides a battery configured to be connected to a bracket. The battery includes a housing. The housing includes a first housing and a second housing, the first housing and the second housing being interconnected along a first direction, and the first housing and the second housing jointly defining a chamber for accommodating a battery cell. The first housing has a first connection surface and a second connection surface facing the first direction, the first connection surface being connected to the second housing, and the second connection surface being used to connect to the bracket. The first connection surface and the second connection surface do not overlap in the first direction.

[0008] In the above scheme, by setting the first connecting surface and the second connecting surface to non-overlapping positions in the first direction, the connecting interface between the first box body and the second box body of the battery and the connecting interface between the battery and the bracket can be staggered in the vertical direction. On the one hand, it can effectively reduce the risk of interference between the battery structure itself and the bracket due to the small distance between the two connecting interfaces, or interference between the battery structure itself and the equipment performing the assembly action, which makes it more difficult to assemble the battery and the bracket and affects the assembly efficiency of the battery and the bracket. On the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface, by staggering the two connecting interfaces in the vertical direction, the additional occupation of the lateral space by the second connecting surface can be effectively reduced, that is, the utilization rate of the box body in the lateral space is improved, and more battery cells can be loaded in the box, so that the battery has a higher volume energy density.

[0009] According to some embodiments of the present application, the second connecting surface is farther away from the cavity than the first connecting surface.

[0010] In the above solution, the second connection surface is on the outside, that is, the connection interface between the battery and the bracket is on the outside, which can reduce the interference of the battery's own structure on the bracket, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery on the bracket, so that the battery can be efficiently assembled on the bracket.

[0011] According to some embodiments of the present application, along the direction from the first box body to the second box body, the second connecting surface extends beyond the first connecting surface.

[0012] The above solution, by setting the second connecting surface to extend beyond the first connecting surface, can, on the one hand, reduce the interference of the battery's own structure on the bracket, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery on the bracket and allowing the battery to be efficiently assembled on the bracket; on the other hand, it can enable the first connecting surface to utilize the space below the bracket in the horizontal direction, thereby increasing the internal volume of the box, thereby loading more battery cells, which is conducive to improving the battery volume energy density.

[0013] According to some embodiments of the present application, the first connection surface is provided with a first connection member, the first connection member is connected to the second box body, and the first connection member does not extend beyond the second connection surface along the direction from the first box body to the second box body.

[0014] In the above solution, the provision of the first connecting portion enables a relatively stable connection between the first and second housings, thereby enhancing the reliability of the battery. Furthermore, by ensuring that the first connecting portion does not extend beyond the second connecting surface, interference with the bracket or with equipment performing assembly operations can be reduced, thereby reducing the difficulty of assembling the battery to the bracket and enabling efficient assembly of the battery to the bracket.

[0015] According to some embodiments of the present application, the first connecting surface is arranged along the circumference of the opening of the first box body, and there are multiple first connecting members, which are arranged at intervals along the circumference of the opening.

[0016] In the above solution, by arranging a plurality of first connectors along the circumference of the opening of the first box, the connection strength and sealing between the first box and the second box can be effectively improved, so that the battery structure is stable and highly reliable.

[0017] According to some embodiments of the present application, the second connection surface is provided with a first mounting hole, and the first mounting hole is used for allowing the mounting member to pass through to connect with the bracket.

[0018] In the above solution, by providing the first mounting hole on the second connection surface, the mounting member can pass through the first mounting hole to conveniently and efficiently mount the battery on the bracket, thereby improving the assembly efficiency between the battery and the bracket.

[0019] According to some embodiments of the present application, the second connection surface includes a first region and a second region, the first region protruding from the second region, the first region being closer to the cavity than the second region, the first region protruding from the second region and being located between two adjacent first connection members. At least a portion of the first mounting hole is located in the first region.

[0020] In the above scheme, by providing a first area that protrudes toward the inside of the box and is located between two adjacent first connecting parts, and at least part of the first mounting hole is provided in the first area, it is possible to prevent the mounting part from interfering with the first connecting part, thereby improving the space utilization rate of the box and making the battery have a higher volume energy density. In other words, the first connecting part can be displaced toward the outside without interfering with the mounting part, thereby widening the space inside the box to assemble more battery cells, thereby facilitating an increase in the volume energy density of the battery.

[0021] According to some embodiments of the present application, the second box body is formed with a avoidance portion for avoiding the first area.

[0022] In the above solution, by providing an avoidance portion on the second box, the impact of the mounting component on the second box can be reduced, so that the structure between the second box and the first box is stable and the sealing is good, thereby increasing the reliability of the battery.

[0023] According to some embodiments of the present application, the first housing further comprises a transition surface, the first connecting surface and the second connecting surface are connected by the transition surface, the first connecting surface, the second connecting surface and the transition surface jointly define a receiving groove, and the first housing is provided with a drainage portion connecting the receiving groove and the outside.

[0024] In the above solution, by providing a drainage portion on the first box body, the accumulated liquid in the receiving tank can be effectively drained, reducing the risk of the box body being corroded due to the accumulated liquid, and making the battery more reliable.

[0025] According to some embodiments of the present application, the drainage portion includes a drainage groove, one end of which passes through the transition surface along the second direction, and the other end of which passes through the outer surface of the first box body, and the first direction and the second direction are perpendicular to each other.

[0026] In the above solution, by providing a drainage groove that passes through the transition surface and the outer surface of the first box body, the accumulated liquid in the receiving tank can be effectively drained, reducing the risk of corrosion of the box body due to the accumulated liquid, and making the battery more reliable.

[0027] According to some embodiments of the present application, the drainage groove extends from the first connecting surface to the second connecting surface along the first direction.

[0028] In the above scheme, by setting the drainage groove to extend from the first connecting surface to the second connecting surface, on the one hand, the accumulated liquid in the receiving groove can be effectively discharged from the outside of the box body, and on the other hand, the molding direction of the drainage groove can be from the second connecting surface downward to the first connecting surface, which can reduce the molding difficulty of the drainage groove, improve the manufacturing efficiency of the box body, and thus improve the manufacturing efficiency of the battery.

[0029] According to some embodiments of the present application, the width of the drainage groove is w, which satisfies 4mm≤w≤15mm.

[0030] In the above solution, by setting the width of the drainage groove to be no less than 4mm, the accumulated liquid in the holding tank can be quickly drained, reducing the risk of corrosion of the housing. By setting the width of the drainage groove to be no greater than 15mm, the impact of the drainage groove on the structural strength of the first housing can be reduced, thereby improving the reliability of the battery. Therefore, by setting the width of the drainage groove to be no less than 4mm and no greater than 15mm, the drainage efficiency of the accumulated liquid and the structural strength of the first housing can be balanced, thereby improving the reliability of the battery.

[0031] According to some embodiments of the present application, the first housing includes two first walls opposing each other along a second direction and two second walls opposing each other along a third direction, the first walls and the second walls being adjacently disposed, and the first direction, the second direction, and the third direction being perpendicular to each other. The first connecting surface includes a first sub-connecting surface and a second sub-connecting surface connected to each other, the first sub-connecting surface being formed on the first wall, and the second sub-connecting surface being formed on the second wall.

[0032] In the above scheme, on the one hand, the first box body is surrounded by two first walls and two second walls, which enables the battery cells to effectively utilize the internal space of the box body, which is beneficial to the improvement of the battery volume energy density. On the other hand, the first connecting surface is formed on the first wall and the second wall, so that the first box body can be effectively connected to the second box body, thereby improving the connection stability and sealing between the first box body and the second box body, and making the battery more reliable.

[0033] According to some embodiments of the present application, the second connecting surface is formed on the first wall.

[0034] In the above solution, by arranging the second connection surface on the first wall, the first wall is connected to the bracket, thereby improving the efficiency of assembling the battery to the bracket under the condition that the battery is stably connected to the bracket.

[0035] According to some embodiments of the present application, the length dimension of the first wall is greater than the length dimension of the second wall.

[0036] In the above solution, by arranging the second connection surface on the first wall with a larger length dimension, a larger connection area can be provided between the battery and the bracket, thereby improving the connection stability between the battery and the bracket, and allowing the battery to be stably mounted on the bracket.

[0037] In a second aspect, some embodiments of the present application further provide an electrical device. The electrical device includes a device body and the battery provided in the first aspect. The device body includes a bracket. The battery is connected to the device body via the bracket and is used to provide electrical energy to the device body.

[0038] In the above scheme, by vertically staggering the connection interface between the first box and the second box of the battery and the connection interface between the battery and the bracket, on the one hand, it can reduce the interference of the battery's own structure on the bracket, or the interference with the equipment performing the assembly action, which makes the assembly of the battery and the bracket more difficult and affects the risk of assembly efficiency of the battery and the bracket. On the other hand, it can improve the horizontal space utilization of the box, so that more battery cells can be loaded in the box, and the battery has a higher volume energy density.

[0039] According to some embodiments of the present application, the second connecting surface is provided with a first mounting hole, the bracket is provided with a second mounting hole, the first mounting hole and the second mounting hole are arranged correspondingly, and the battery is mounted on the bracket by passing through the first mounting hole and the second mounting hole through the mounting part.

[0040] In the above scheme, by setting the first mounting hole and the second mounting hole, the battery can be connected to the bracket in a mounting manner. On the one hand, it can improve the efficiency of assembling the battery on the bracket. On the other hand, it enables the electrical device to be recharged by replacing the battery, so that the electrical device has a faster energy recharge efficiency.

[0041] According to some embodiments of the present application, the mounting member is rotatably disposed in the first mounting hole, and the mounting member is configured to be locked or unlocked to the bracket by rotation.

[0042] In the above solution, the battery can be locked or unlocked on the bracket by rotating the mounting member, so that the battery can be quickly replaced to increase the energy charging efficiency of the electrical device.

[0043] According to some embodiments of the present application, the second connection surface includes a first region and a second region, the first region protruding from the second region and being closer to the chamber than the second region. The mounting member includes a rod body and at least two mounting portions, the mounting portions protruding radially from the rod body, and the second mounting hole is for the mounting portions to pass through. When the mounting member is locked to the bracket, at least one mounting member and the first region cooperate to clamp the bracket.

[0044] In the above scheme, by providing a first area that protrudes toward the inner side of the box body and is located between two adjacent first connecting parts, and the first area can cooperate with the mounting part to clamp the bracket, the mounting part can not interfere with the connecting component between the first box body and the second box body, thereby improving the space utilization of the box body and making the overall structure of the battery compact so as to have a higher volume energy density.

[0045] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0047] FIG1 is a schematic diagram of a vehicle in some embodiments of the present application;

[0048] FIG2 is a schematic diagram of a battery and a bracket in some embodiments of the present application;

[0049] FIG3 is a schematic diagram of a battery in some embodiments of the present application;

[0050] FIG4 is a schematic diagram of a partial structure of a battery in some embodiments of the present application;

[0051] Figure 5 is an enlarged view of point A in Figure 3;

[0052] FIG6 is an enlarged view of point B in FIG4 ;

[0053] FIG7 is a schematic diagram of a first wall and a second wall in some embodiments of the present application;

[0054] FIG8 is a schematic diagram of a first wall in some embodiments of the present application;

[0055] FIG9 is an enlarged view of point C in FIG8 ;

[0056] Figure 10 is an enlarged view of point D in Figure 2;

[0057] FIG11 is a schematic diagram of the partial structure of the bracket and the battery in some embodiments of the present application.

[0058] Icon: 100-battery; 10-box; 11-first box; 110-first wall; 111-second wall; 12-second box; 120-avoidance part; 121-flange; 122-avoidance groove; 13-first connecting surface; 13a-first sub-connecting surface; 13b-second sub-connecting surface; 130-first connecting member; 14-second connecting surface; 140-first mounting hole; 141-first area; 142-second area; 15-transition surface; 16-accommodating groove; 17-drainage part; 170-drainage groove; 30-battery cell; 20-mounting member; 21-rod body; 22-hanging part; z-first direction; x-second direction; y-third direction; 1000-vehicle; 200-controller; 300-motor; 400-bracket; 401-second mounting hole. DETAILED DESCRIPTION

[0059] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0061] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0062] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0063] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0064] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "length", "width", "thickness", "up", and "down" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0067] The battery mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include one or more battery cells. The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer, and the positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet consists of a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The negative current collector uncoated with the negative active material layer protrudes from the negative current collector coated with the negative active material layer, and the negative current collector uncoated with the negative active material layer serves as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon. The separator can be made of materials such as PP (polypropylene) or PE (polyethylene).

[0068] The battery also includes a box body, which includes a first box body and a second box body. The first box body and the second box body are connected, and the second box body closes the opening of the first box body to jointly form a closed space. The battery cell is arranged in the closed space to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell.

[0069] The electrical devices mentioned in the embodiments of the present application can be used, but are not limited to, in vehicles, ships, or aircraft. The battery can provide electrical energy to the electrical device to enable the electrical device to operate. In some embodiments, the electrical device includes a device body having a bracket, and the battery is assembled to the device body via the bracket. In some embodiments, the connection between the battery and the bracket includes, but is not limited to, welding, clamping, threaded connection, or mounting connection.

[0070] In recent years, electric vehicles have experienced rapid development. In this field, batteries, as the power source of electric vehicles, play an irreplaceable and important role. As a core component of electric vehicles, batteries have high requirements in terms of energy density.

[0071] Currently, batteries are mounted on the underbody of a vehicle via a bracket. The battery housing includes a first housing and a second housing connected along a first direction, which together define a chamber for accommodating the battery cells. The first housing has a first connection surface and a second connection surface oriented in the first direction. The first housing connects to the second housing via the first connection surface, and the housing connects to the bracket via the second connection surface, thereby connecting the battery to the vehicle body. The distance between the battery structure and the bracket should not be too small, as this will cause interference between the battery structure and the bracket, or interference with the equipment that assembles the battery and bracket (e.g., a robot), thus affecting the connection between the battery and bracket. Currently, increasing the lateral dimension of the second connection surface (lateral dimension can refer to a direction perpendicular to the first direction, e.g., the second direction, where the first direction can be considered vertical) is often used to reduce interference between the battery structure and the bracket, or reduce interference with the equipment that assembles the battery and bracket, thereby ensuring smooth assembly of the battery and bracket. However, increasing the lateral dimension of the second connection surface results in low housing space utilization, affecting the battery's volumetric energy density.

[0072] In view of this, in order to reduce the interference of the battery structure on the bracket, affecting the assembly efficiency of the battery and the bracket, and to improve the volumetric energy density of the battery, some embodiments of the present application provide a battery, wherein a first housing of the battery has a first connection surface and a second connection surface arranged in a first direction, the first connection surface being connected to the second housing, and the second connection surface being used to connect to the bracket. The first connection surface and the second connection surface do not overlap in the first direction.

[0073] By setting the first connecting surface and the second connecting surface to non-overlapping positions in the first direction, the connecting interface between the first box body and the second box body of the battery and the connecting interface between the battery and the bracket can be staggered in the vertical direction. On the one hand, it can effectively reduce the risk of interference between the battery structure itself and the bracket due to the small distance between the two connecting interfaces, or interference between the battery structure itself and the equipment performing the assembly action, which makes it more difficult to assemble the battery and the bracket and affects the assembly efficiency of the battery and the bracket. On the other hand, compared with the solution of increasing the lateral dimension of the second connecting surface, by staggering the two connecting interfaces in the vertical direction, the additional occupation of the lateral space by the second connecting surface can be effectively reduced, that is, the utilization rate of the lateral space of the box body is improved, and more battery cells can be loaded in the box body, so that the battery has a higher volume energy density.

[0074] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, vehicles, and can also be used in other electrical devices, wherein the battery can be connected to the device body through a bracket.

[0075] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, vehicles, ships, or aircraft.

[0076] The embodiments of the present application provide an electrical device using a battery as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a heavy truck, a bus, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0077] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device according to an embodiment of the present application.

[0078] Please refer to Figure 1, which is a schematic diagram of a vehicle in some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The type of vehicle 1000 can be a sedan, an off-road vehicle, a heavy truck or a bus, etc. A battery 100 is provided inside the vehicle 1000, and the battery 1000 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0079] The vehicle 1000 may further include a controller 200 and a motor 300 . The controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0080] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0081] In some embodiments of the present application, the vehicle body of the vehicle 1000 has a bracket 400, and the bracket 400 can be connected to the battery 100. In some embodiments of the present application, the vehicle body has a longitudinal beam, and the bracket 400 is connected to the longitudinal beam.

[0082] Some embodiments of the present application provide a battery 100, please refer to Figures 2 to 6, Figure 2 is a schematic diagram of the battery and the bracket in some embodiments of the present application, Figure 3 is a schematic diagram of the battery in some embodiments of the present application, Figure 4 is a schematic diagram of the local structure of the battery in some embodiments of the present application, Figure 5 is an enlarged view of point A in Figure 3, and Figure 6 is an enlarged view of point B in Figure 4.

[0083] The battery 100 is configured to be connected to the bracket 400. The battery 100 is configured to be connected to the bracket 400. The battery 100 includes a housing 10. The housing 10 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are connected to each other along a first direction z. The first housing 11 and the second housing 12 together define a chamber for accommodating battery cells. The first housing 11 has a first connecting surface 13 and a second connecting surface 14 facing the first direction z. The first connecting surface 13 is connected to the second housing 12, and the second connecting surface 14 is used to connect to the bracket 400. The first connecting surface 13 and the second connecting surface 14 do not overlap in the first direction z.

[0084] The battery 100 can be connected to the main body of an electrical device via a bracket 400. For example, the electrical device is a vehicle, and the bracket 400 is provided on the vehicle frame. The battery 100 is connected to the bracket 400 to provide power for the vehicle's operation. In some embodiments, the battery 100 is detachably connected to the bracket 400, thereby enabling battery replacement and energy replenishment for the vehicle.

[0085] The interior of the housing 10 has a chamber for accommodating battery cells. In some embodiments, the housing 10 may include a first housing 11 and a second housing 12, which are connected to each other and together define a chamber for accommodating battery cells, and the chamber is a closed space. Alternatively, the first housing 11 and the second housing 12 may be hollow structures with one side open, and the open side of the first housing 11 and the open side of the second housing 12 cooperate with each other so that the first housing 11 and the second housing 12 together define a closed space; alternatively, the first housing 11 may be a hollow structure with one end open, and the second housing 12 may be a plate-like structure, and the second housing 12 is arranged on the open side of the first housing 11, so that the first housing 11 and the second housing 12 together define a closed space. Alternatively, the second housing 12 may be a hollow structure with one end open, and the first housing 11 may be a plate-like structure, and the first housing 11 is arranged on the open side of the second housing 12, so that the first housing 11 and the second housing 12 together define a closed space. Optionally, the number of battery cells disposed in the enclosed space may be one or more.

[0086] For example, referring to FIG4 , a battery 100 is provided with a plurality of battery cells 30. The plurality of battery cells 30 can be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the plurality of battery cells 30. The plurality of battery cells 30 can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 30 is contained within a closed space. Of course, the battery 100 can also be a battery module formed by first connecting the plurality of battery cells 30 in series, in parallel, or in a hybrid connection, and then the plurality of battery modules are further connected in series, in parallel, or in a hybrid connection to form an entire battery cell 30, and then contained within a closed space.

[0087] In some embodiments, the connection relationship between the first box body 11 and the second box body 12 includes, but is not limited to, welding, bonding, clamping, connection with a connecting member, etc. For example, the first box body 11 and the second box body 12 are connected by screws.

[0088] In some embodiments, the first housing 11 may be the lower housing 10, and the second housing 12 may be the upper cover. The vehicle frame includes two longitudinal beams, and the second housing 12 is formed with an escape groove 122. The escape groove 122 can avoid the longitudinal beams of the vehicle, so that the battery cells in the housing 10 can use the space beside the longitudinal beams, thereby improving the space utilization of the battery 100.

[0089] In some embodiments, the structural strength of the material of the first housing 11 can be greater than the structural strength of the second housing 12. In some embodiments, the density of the material of the first housing 11 can be greater than the density of the second housing 12. For example, the material of the first housing 11 includes but is not limited to aluminum alloy or stainless steel.

[0090] In some embodiments, the first direction z can be parallel to the direction of gravity. The phrase "first connecting surface 13 and second connecting surface 14 facing the first direction z" can be understood as meaning that the plane where the first connecting surface 13 is located can be perpendicularly passed through by the first direction z, and the plane where the second connecting surface 14 is located can be perpendicularly passed through by the first direction z.

[0091] The first connection surface 13 is the surface connecting the first box body 11 and the second box body 12. For example, the edge of the second box body 12 is provided with a flange 121, which overlaps the first connection surface 13. The flange 121 is provided with a through hole, and the first connection surface 13 is provided with a corresponding threaded hole. Bolts pass through the through holes of the flange 121 and are screwed into the threaded holes, thereby connecting the first box body 11 and the second box body 12 to each other.

[0092] In some embodiments, the first connecting surface 13 can be arranged along the circumference of the opening of the first housing 11. In some embodiments, please refer to Figures 7 to 9. Figure 7 is a schematic diagram of the first wall and the second wall in some embodiments of the present application, Figure 8 is a schematic diagram of the first wall in some embodiments of the present application, and Figure 9 is an enlarged view of point C in Figure 8.

[0093] The box body 10 is square in shape. The first box body 11 includes a bottom wall, two first walls 110 opposing each other along the second direction x, and two second walls 111 opposing each other along the third direction y. The first wall 110 and the second wall 111 are adjacently disposed and are respectively arranged at the edge of the bottom wall. The first connecting surface 13 is annular and includes a first sub-connecting surface 13a and a second sub-connecting surface 13b that are interconnected. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111. The four edges of the second box body 12 are provided with flanges 121, which overlap the first wall 110 and the second wall 111 and correspond to the first sub-connecting surfaces 13a and the second sub-connecting surfaces 13b.

[0094] The second connection surface 14 is the surface connecting the housing 10 to the bracket 400, and is also the location where the battery 100 connects to the bracket 400. In some embodiments, the second connection surface 14 is formed at the end of the first wall 110 facing away from the bottom wall. In other embodiments, the second connection surface 14 is formed at the end of the second wall 111 facing away from the bottom wall. In still other embodiments, the second connection surface 14 is formed at the end of the first wall 110 facing away from the bottom wall and the end of the second wall 111 facing away from the bottom wall.

[0095] In some embodiments, the connection between the bracket 400 and the second connection surface 14 includes, but is not limited to, welding, clamping, bonding, or connection with a connecting member. In some embodiments, the second connection surface 14 is formed with a threaded hole, and the bracket 400 is connected to the threaded hole via a bolt to connect to the battery 100. In some embodiments, the second connection surface 14 is provided with a first mounting hole 140. The first mounting hole 140 is capable of accommodating the mounting member 20. The mounting member 20 passes through the opening of the first mounting hole 140 to be mounted on the bracket 400, thereby enabling the battery 100 to be mounted on the bracket 400.

[0096] “The positions of the first connecting surface 13 and the second connecting surface 14 in the first direction z do not overlap” can be understood as that the first connecting surface 13 and the second connecting surface 14 are staggered in the first direction z. For example, the first direction z is the direction of gravity, and the first connecting surface 13 is below the second connecting surface 14, that is, the part where the first box body 11 and the second box body 12 are connected to each other is below the part where the battery 100 and the bracket 400 are connected to each other; for another example, the first direction z is the direction of gravity, and the first connecting surface 13 is above the second connecting surface 14, that is, the part where the first box body 11 and the second box body 12 are connected to each other is above the part where the battery 100 and the bracket 400 are connected to each other.

[0097] In the above scheme, by setting the first connecting surface 13 and the second connecting surface 14 to non-overlapping positions in the first direction z, the connecting interface between the first box body 11 and the second box body 12 of the battery 100 and the connecting interface between the battery 100 and the bracket 400 can be vertically offset. On the one hand, it can effectively reduce the risk of interference between the battery 100 itself and the bracket 400 due to the small distance between the two connecting interfaces, or interference between the battery 100 itself and the equipment performing the assembly action, thereby increasing the difficulty of assembling the battery 100 and the bracket 400 and affecting the assembly efficiency of the battery 100 and the bracket 400; on the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface 14, by vertically offsetting the two connecting interfaces, the additional lateral space occupied by the second connecting surface 14 can be effectively reduced, that is, the utilization rate of the lateral space of the box body 10 is improved, and more battery cells can be loaded in the box body 10, so that the battery 100 has a higher volume energy density.

[0098] According to some embodiments of the present application, the second connecting surface 14 is farther away from the cavity than the first connecting surface 13 .

[0099] In some embodiments, the second connection surface 14 is located outside the interior space of the box body 10 relative to the first connection surface 13. For example, the edge of the first connection surface 13 facing away from the outer side of the box body 10 forms an opening of the first box body 11, and the second connection surface 14 is located outside the opening of the first box body 11.

[0100] In some embodiments, the second connection surface 14 includes multiple areas, some of which may be farther from the chamber than the first connection surface 13, while other areas may be closer to the chamber than the first connection surface 13. For example, the second connection surface 14 includes an area that protrudes toward the interior of the housing 10, and the first connection surface 13 is formed with a recessed portion to avoid this area.

[0101] In the above solution, the second connecting surface 14 is on the outside, that is, the connection interface between the battery 100 and the bracket 400 is on the outside, which can reduce the interference of the battery 100's own structure on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400.

[0102] According to some embodiments of the present application, along the direction from the first box body 11 to the second box body 12 , the second connecting surface 14 extends beyond the first connecting surface 13 .

[0103] In some embodiments, the battery 100 can be mounted below the bracket 400. The second connection surface 14 extending beyond the first connection surface 13 can be understood as the second connection surface 14 being located above the first connection surface 13. For example, the lowest portion of the second housing 12 overlaps the first connection surface 13, and the second connection surface 14 is higher than the lowest portion of the second housing 12.

[0104] The above solution, by setting the second connecting surface 14 to extend beyond the first connecting surface 13, can, on the one hand, reduce the interference of the battery 100's own structure on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400; on the other hand, it can enable the first connecting surface 13 to utilize the space below the bracket 400 in the horizontal direction, thereby increasing the internal volume of the box 10, thereby loading more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0105] In other embodiments, the first connection surface 13 extends beyond the second connection surface 14 along the direction from the first housing 11 to the second housing 12. In these other embodiments, the battery 100 can be mounted below the bracket 400, with the lowest portion of the second housing 12 overlapping the first connection surface 13 and the second connection surface 14 being lower than the lowest portion of the second housing 12.

[0106] According to some embodiments of the present application, see Figure 5 . The first connection surface 13 is provided with a first connection member 130 , which is connected to the second box 12 . In the direction from the first box 11 to the second box 12 , the first connection member 130 does not extend beyond the second connection surface 14 .

[0107] The first connecting member 130 is a connecting component connecting the first box body 11 and the second box body 12. For example, the first connecting member 130 may include a bolt, a screw, a rivet, or the like.

[0108] In some embodiments, the first connecting member 130 is a bolt. The edge of the second housing 12 is provided with a flange 121, which overlaps the first connecting surface 13. The flange 121 is provided with a through hole, and the first connecting surface 13 is provided with a corresponding threaded hole. The screw of the first connecting member 130 passes through the through hole of the flange 121 and is screwed into the threaded hole. The nut of the first connecting member 130 abuts against the flange 121, thereby connecting the first housing 11 and the second housing 12 to each other.

[0109] “The first connecting member 130 does not extend beyond the second connecting surface 14 along the direction from the first box body 11 to the second box body 12” can be understood as that the portion of the first connecting member 130 on the same side as the second connecting surface 14 does not extend beyond the second connecting surface 14. For example, when the first connecting member 130 is a bolt, the nut of the bolt does not extend beyond the second connecting surface 14.

[0110] The above solution, by setting the second connecting surface 14 to extend beyond the first connecting surface 13, can, on the one hand, reduce the interference of the battery 100's own structure on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400; on the other hand, it can enable the first connecting surface 13 to utilize the space below the bracket 400 in the horizontal direction, thereby increasing the internal volume of the box 10, thereby loading more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0111] In some embodiments, a sealing member may be provided between the second box body 12 and the first connecting surface 13 . The sealing member may be a sealing structure such as a sealing rubber ring or a sealing gasket.

[0112] According to some embodiments of the present application, see Figures 4 and 5. The first connection surface 13 is arranged along the circumference of the opening of the first box body 11, and there are multiple first connection members 130, which are arranged at intervals along the circumference of the opening.

[0113] In some embodiments, the box body 10 is square in shape. The first box body 11 includes a bottom wall, two first walls 110 opposing each other along a second direction x, and two second walls 111 opposing each other along a third direction y. The first wall 110 and the second wall 111 are adjacently disposed and are respectively disposed at the edge of the bottom wall. The two first walls 110 and the two second walls 111 together form an opening of the first box body 11. The first connecting surface 13 includes a first sub-connecting surface 13a and a second sub-connecting surface 13b that are interconnected. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111. The four edges of the second box body 12 are each provided with a flange 121. The four flanges 121 overlap the first wall 110 and the second wall 111 and correspond to the first sub-connecting surface 13a and the second sub-connecting surface 13b. There are multiple first connecting members 130, each disposed corresponding to the first sub-connecting surface 13a of the first wall 110 and the second sub-connecting surface 13b of the second wall 111.

[0114] In other embodiments, the box body 10 is cylindrical, the peripheral wall of the first box body 11 forms a circular opening, the end surface of the peripheral wall of the first box body 11 forms a first connecting surface 13, and multiple first connecting surfaces 13 are arranged at intervals on the first connecting surface 13.

[0115] In the above solution, by disposing a plurality of first connectors 130 along the circumference of the opening of the first box body 11 , the connection strength and sealing between the first box body 11 and the second box body 12 can be effectively improved, so that the battery 100 has a stable structure and high reliability.

[0116] According to some embodiments of the present application, please refer to Figures 5 and 6. The second connection surface 14 is provided with a first mounting hole 140, and the first mounting hole 140 is used for the mounting member 20 to pass through to connect with the bracket 400.

[0117] The first mounting hole 140 is a hole-shaped structure formed on the second connecting surface 14. The first mounting hole 140 passes through the second connecting surface 14 and can accommodate the mounting member 20. The mounting member 20 passes through the opening formed in the first mounting hole 140 on the second connecting surface 14 to be mounted on the bracket 400.

[0118] For example, the bracket 400 is formed with a second mounting hole 401 corresponding to the first mounting hole 140. The second mounting hole 401 is non-centrally symmetrical, with one dimension being larger, such as being rectangular. The mounting member 20 is rotatably disposed in the first mounting hole 140. The mounting member 20 includes a rod 21 and a mounting portion 22. The rod 21 is rotatably disposed in the first mounting hole 140. The mounting portion 22 is radially protruding from the rod 21. When the battery 100 is moved upward, the mounting portion 22 passes through the second mounting hole 401. Rotating the rod 21 causes the mounting portion 22 to rotate, causing the mounting portion 22 to be offset from the second mounting hole 401 so that it can overlap the bracket 400.

[0119] In the above solution, by providing the first mounting hole 140 on the second connection surface 14 , the mounting member 20 can pass through the first mounting hole 140 to conveniently and efficiently mount the battery 100 on the bracket 400 , thereby increasing the assembly efficiency between the battery 100 and the bracket 400 .

[0120] According to some embodiments of the present application, referring to FIG. 9 , the second connection surface 14 includes a first region 141 and a second region 142. The first region 141 is protruded from the second region 142. The first region 141 is closer to the chamber than the second region 142. The first region 141 protrudes from the second region 142 and is located between two adjacent first connectors 130. At least a portion of the first mounting hole 140 is located in the first region 141.

[0121] In some embodiments, the second connecting surface 14 includes a first region 141 and a second region 142, wherein the second region 142 is located outside the housing 10 relative to the first region 141. The edge of the second region 142 facing away from the first connecting surface 13 is at least a portion of the outer edge of the first housing 11. There may be multiple first regions 141, each of which protrudes from the second region 142 toward the inside of the housing 10. Each first region 141 is located between two first connecting members 130. For example, the first connecting surface 13 is provided with threaded holes that mate with the first connecting members 130, and each first region 141 is located between two adjacent threaded holes.

[0122] “At least a portion of the first mounting hole 140 is located in the first area 141 ” can be understood as that a portion of the mounting component 20 can utilize the space between the two first connecting components 130 .

[0123] In some embodiments, when the mounting member 20 is mounted on the bracket 400 , at least one mounting member 20 overlaps the bracket 400 and cooperates with the first area 141 to clamp the bracket 400 .

[0124] In the above scheme, by providing a first area 141 that protrudes toward the inside of the box 10 and is located between two adjacent first connecting parts, and at least a portion of the first mounting hole 140 is provided in the first area 141, the mounting member 20 can be prevented from interfering with the first connecting member 130, thereby improving the space utilization rate of the box 10 and making the battery 100 have a higher volume energy density. In other words, the first connecting member 130 can be displaced toward the outside without interfering with the mounting member 20, thereby widening the space inside the box 10 to assemble more battery cells, thereby facilitating an increase in the volume energy density of the battery 100.

[0125] According to some embodiments of the present application, referring to FIG5 and FIG9 , the second housing 12 is formed with a relief portion 120 for relief from the first area 141 .

[0126] In some embodiments, the second housing 12 overlaps the first connection surface 13 and is recessed inwardly of the housing 10 to form a relief portion 120. The relief portion 120 can avoid the first region 141 and the portion of the mounting component 20 located in the first region 141. For example, the second housing 12 is provided with a flange 121 that overlaps the first connection surface 13 and is recessed inwardly of the housing 10 to form a relief groove. The relief groove can expose the first region 141 so as not to interfere with the mounting component 20.

[0127] In the above solution, by providing the avoidance portion 120 on the second box body 12, the impact of the mounting member 20 on the second box body 12 can be reduced, so that the structure between the second box body 12 and the first box body 11 is stable and the sealing is good, so that the reliability of the battery 100 is high.

[0128] According to some embodiments of the present application, see Figure 9. The first housing 11 further comprises a transition surface 15, through which the first connecting surface 13 and the second connecting surface 14 are connected. The first connecting surface 13, the second connecting surface 14, and the transition surface 15 collectively define a receiving groove 16. The first housing 11 is provided with a drainage portion 17 that connects the receiving groove 16 with the outside world.

[0129] The plane on which the first connecting surface 13 and the plane on which the second connecting surface 14 are located are parallel to each other, but there is a height difference between them. The transition surface 15 is located between and connects the first connecting surface 13 and the second connecting surface 14. In some embodiments, the plane on which the transition surface 15 is located is perpendicular to the plane on which the first connecting surface 13 and the second connecting surface 14 are located. In other embodiments, the plane on which the transition surface 15 is located is inclined relative to the plane on which the first connecting surface 13 and the second connecting surface 14 are located.

[0130] In some embodiments, the first connecting surface 13 , the transition surface 15 , and the second connecting surface 14 form a trapezoidal surface and together define a receiving groove 16 . In some embodiments, the receiving groove 16 can receive the first connecting member 130 .

[0131] The drain portion 17 is formed in the first housing 11 and serves to connect the receiving tank 16 with the outside world to drain the accumulated liquid in the receiving tank 16. For example, the drain portion 17 is a groove, hole, or pipe structure that can guide the accumulated liquid in the receiving tank 16 to the outside of the housing 10.

[0132] In some embodiments, the drainage portion 17 may be a drainage groove 170. The drainage groove 170 may penetrate the first wall 110 along the thickness direction of the first wall 110, that is, penetrate the transition surface 15 and the outer side surface of the first wall 110. In some embodiments, the drainage portion 17 may be a drainage groove 170. The drainage groove 170 may penetrate the first wall 110 along the first direction z, that is, penetrate the first connecting surface 13 and the bottom of the first wall 110.

[0133] In the above solution, by providing the drainage portion 17 on the first box body 11 , the accumulated liquid in the receiving tank 16 can be effectively drained, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, and making the battery 100 more reliable.

[0134] According to some embodiments of the present application, referring to Figures 9 and 10 , Figure 10 is an enlarged view of point D in Figure 2 , the drainage portion 17 includes a drainage groove 170 . Along the second direction x, one end of the drainage groove 170 extends through the transition surface 15 , and the other end of the drainage groove 170 extends through the outer surface of the first housing 11 . The first direction z and the second direction x are perpendicular to each other.

[0135] In some embodiments, the drainage portion 17 is a drainage groove 170, which is a groove-like structure formed in the wall of the first housing 11. When the first direction z is parallel to the direction of gravity, the drainage groove 170 can extend horizontally to penetrate the transition portion and the outer surface of the first housing 11. For example, the drainage groove 170 is formed in the first wall 110, with the thickness direction of the first wall 110 being the second direction x. The drainage groove 170 extends along the second direction x, with one end penetrating the transition surface 15 and the other end penetrating the outer surface of the first wall 110.

[0136] In the above solution, by providing a drainage groove 170 that passes through the transition surface 15 and the outer surface of the first box body 11, the accumulated liquid in the receiving groove 16 can be effectively discharged, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, so that the battery 100 has higher reliability.

[0137] In some embodiments, there are multiple drainage grooves 170 , and the multiple drainage grooves 170 are spaced apart along the third direction y. The first direction z, the second direction x, and the third direction y are perpendicular to each other.

[0138] According to some embodiments of the present application, please refer to Figures 8 and 9 . Along the first direction z, the drainage groove 170 extends from the first connecting surface 13 to the second connecting surface 14 .

[0139] In some embodiments, the drainage groove 170 may extend from the second connection surface 14 toward the first connection surface 13 and pass through the transition surface 15 and the outer surface of the first box body 11 .

[0140] In the above scheme, by setting the drainage groove 170 to extend from the first connecting surface 13 to the second connecting surface 14, on the one hand, the accumulated liquid in the receiving groove 16 can be effectively discharged from the outside of the box body 10, and on the other hand, the molding direction of the drainage groove 170 can be from the second connecting surface 14 downward to the first connecting surface 13, which can reduce the molding difficulty of the drainage groove 170, improve the manufacturing efficiency of the box body 10, and further improve the manufacturing efficiency of the battery 100.

[0141] In other embodiments, the first drainage groove 170 is a through-hole structure, one end of which passes through the transition surface 15 and the other end of which passes through the outer surface of the first box body 11 .

[0142] According to some embodiments of the present application, referring to FIG. 10 , the width of the drainage groove 170 is w, which satisfies 4 mm ≤ w ≤ 15 mm.

[0143] The width of the drainage groove 170 can be perpendicular to the extension direction of the drainage groove 170. In some embodiments, the drainage groove 170 extends along the second direction x, with one end extending through the transition surface 15 and the other end extending through the outer side surface of the first wall 110. The width of the drainage groove 170 can be the third direction y, which is perpendicular to the second direction x.

[0144] In some embodiments, the width w of the drainage groove 170 can be 4 mm, 5 mm, 6 mm, 7 mm...13 mm, 14 mm, 15 mm or any value between two adjacent values.

[0145] In some embodiments, along the extension direction of the drainage groove 170, the value of the groove width w of the drainage groove 170 may not be fixed, that is, the width of a certain section of the drainage groove 170 may be inconsistent with the width of other sections. For example, the width of one section of the drainage groove 170 may be 4 mm, the width of another section may be 5 mm, and the width of another section may be 10 mm.

[0146] In the above solution, by setting the width of the drainage groove 170 to be no less than 4 mm, the accumulated liquid in the receiving tank 16 can be quickly drained, reducing the risk of corrosion of the housing 10. By setting the width of the drainage groove 170 to be no greater than 15 mm, the impact of the drainage groove 170 on the structural strength of the first housing 11 can be reduced, thereby enhancing the reliability of the battery 100. Therefore, by setting the width of the drainage groove 170 to be no less than 4 mm and no greater than 15 mm, the drainage efficiency of the accumulated liquid and the structural strength of the first housing 11 can be balanced, thereby enhancing the reliability of the battery 100.

[0147] In some embodiments, the notch w of the drainage groove 170 may satisfy 10 mm ≤ w ≤ 12 mm.

[0148] According to some embodiments of the present application, please refer to Figure 7. The first housing 11 includes two first walls 110 opposing each other along the second direction x and two second walls 111 opposing each other along the third direction y. The first walls 110 and the second walls 111 are adjacent to each other, and the first direction z, the second direction x, and the third direction y are perpendicular to each other. The first connecting surface 13 includes a first sub-connecting surface 13a and a second sub-connecting surface 13b connected to each other. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111.

[0149] The box body 10 can be square in shape. The first box body 11 includes two first walls 110 that face each other along a second direction x, and two second walls 111 that face each other along a third direction y. The first walls 110 and the second walls 111 are adjacently disposed and are respectively disposed at the edges of the bottom wall. The second direction x can be the thickness direction of the first wall 110, and the second direction x can be the thickness direction of the second wall 111.

[0150] The first connection surface 13 is annular and includes a first sub-connection surface 13 a and a second sub-connection surface 13 b connected to each other. The first sub-connection surface 13 a is formed on the first wall 110 , and the second sub-connection surface 13 b is formed on the second wall 111 .

[0151] Exemplarily, the four edges of the second box body 12 are each provided with a flange 121 , and the four flanges 121 are respectively overlapped on the first wall 110 and the second wall 111 and correspond to the first sub-connection surface 13a and the second sub-connection surface 13b.

[0152] In the above scheme, on the one hand, the first box body 11 is surrounded by two first walls 110 and two second walls 111, which enables the battery cells to effectively utilize the internal space of the box body 10, which is beneficial to the improvement of the volume energy density of the battery 100. On the other hand, the first connecting surface 13 is formed on the first wall 110 and the second wall 111, so that the first box body 11 can be effectively connected to the second box body 12, thereby improving the connection stability and sealing of the first box body 11 and the second box body 12, and making the reliability of the battery 100 higher.

[0153] According to some embodiments of the present application, please refer to FIG7 . The second connecting surface 14 is formed on the first wall 110 .

[0154] The phrase "second connection surface 14 is formed on the first wall 110" can be understood as meaning that the connection between the housing 10 and the bracket 400 is formed on the first wall 110. For example, the first wall 110 is formed with a first mounting hole 140, and the first wall 110 is mounted on the bracket 400 via the mounting member 20 passing through the first mounting hole 140, thereby mounting the battery 100 on the bracket 400.

[0155] “The second connection surface 14 is formed on the first wall 110 ” may also be understood as the second connection surface 14 is only formed on the first wall 110 , and the second connection surface 14 is not formed on the second wall 111 .

[0156] In the above solution, by setting the second connection surface 14 on the first wall 110, the first wall 110 is connected to the bracket 400, so that the battery 100 is stably connected to the bracket 400, thereby improving the efficiency of assembling the battery 100 on the bracket 400.

[0157] According to some embodiments of the present application, the length dimension of the first wall 110 is greater than the length dimension of the second wall 111 .

[0158] In some embodiments, the battery 100 is in an elongated shape, and its dimension in the second direction x is relatively large. The second connecting surface 14 is formed on a wall portion of the first box body 11 having a relatively large length dimension.

[0159] The length of the first wall 110 can be considered the dimension of the first wall 110 in the second direction x. The bracket 400 can be mounted on two longitudinal beams of the vehicle frame, with the two longitudinal beams arranged side by side along the second direction x. A plurality of mounting members 20 are spaced apart along the second direction x on the second connecting surface 14 of the first wall 110 and mounted on the bracket 400.

[0160] In the above solution, by setting the second connecting surface 14 on the first wall 110 with a larger length dimension, a larger connection area can be provided between the battery 100 and the bracket 400, thereby improving the connection stability between the battery 100 and the bracket 400, so that the battery 100 can be stably mounted on the bracket 400.

[0161] According to some embodiments of the present application, an electrical device is further provided. The electrical device includes a device body and the battery 100 provided above. The device body has a bracket 400. The battery 100 is connected to the device body via the bracket 400 and is used to provide electrical energy to the device body.

[0162] The electrical device may be a vehicle, and a vehicle is used as an example for this description.

[0163] The vehicle can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. The vehicle can be a sedan, an SUV, a heavy truck, or a bus. The vehicle is equipped with a battery 100, which can be located on the vehicle's underbody. Battery 100 can be used to power the vehicle, for example, as an operating power source for the vehicle's circuit system, such as for starting, navigation, and operating power requirements.

[0164] The vehicle may also include a controller and a motor. The controller is used to control the battery 100 to power the motor, for example, to meet the vehicle's starting, navigation, and operating power requirements during driving. In some embodiments of the present application, the battery 100 can serve not only as the vehicle's operating power source, but also as the vehicle's driving power source, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0165] The device body may include a vehicle frame, which may include longitudinal beams, mounted with brackets 400. Brackets 400 are used to mount battery 100. In some embodiments, battery 100 and brackets 400 may be fixedly or detachably connected. When battery 100 and brackets 400 are detachably connected, the vehicle's energy replenishment method may include battery swapping, i.e., replacing battery 100.

[0166] In some embodiments, the battery 100 can be mounted on the bracket 400 from below the bracket 400 .

[0167] In the above scheme, by vertically staggering the connection interface between the first box body 11 and the second box body 12 of the battery 100 and the connection interface between the battery 100 and the bracket 400, on the one hand, it can reduce the interference of the battery 100's own structure on the bracket 400, or the interference with the equipment performing the assembly action, which makes the assembly difficulty of the battery 100 and the bracket 400 increased and affects the risk of assembly efficiency of the battery 100 and the bracket 400; on the other hand, it can improve the horizontal space utilization of the box body 10, so that more battery cells can be loaded in the box body 10, so that the battery 100 has a higher volume energy density.

[0168] According to some embodiments of the present application, please refer to Figure 5 and Figure 11. Figure 11 is a schematic diagram of the partial structure of the bracket and the battery in some embodiments of the present application. The second connecting surface 14 is provided with a first mounting hole 140, and the bracket 400 is provided with a second mounting hole 401. The first mounting hole 140 and the second mounting hole 401 are provided correspondingly. The battery 100 passes through the first mounting hole 140 and the second mounting hole 401 through the mounting part 20 to be mounted on the bracket 400.

[0169] The first mounting hole 140 is a hole-shaped structure formed on the second connecting surface 14. The first mounting hole 140 passes through the second connecting surface 14 and can accommodate the mounting member 20. The mounting member 20 passes through the opening formed in the first mounting hole 140 on the second connecting surface 14 to be mounted on the bracket 400.

[0170] The bracket 400 is formed with a second mounting hole 401 corresponding to the first mounting hole 140. Exemplarily, the second mounting hole 401 is non-centrally symmetrical, with one dimension being larger, such as being rectangular. The mounting member 20 is rotatably disposed in the first mounting hole 140. The mounting member 20 includes a rod 21 and a mounting portion 22. The rod 21 is rotatably disposed in the first mounting hole 140. The mounting portion 22 protrudes radially from the rod 21. When the battery 100 is moved upward, the mounting portion 22 passes through the second mounting hole 401. Rotating the rod 21 causes the mounting portion 22 to rotate, causing the mounting portion 22 to be misaligned with the second mounting hole 401 so as to be able to overlap the bracket 400. Furthermore, illustratively, the second mounting hole 401 may be a threaded hole, and the mounting member 20 may be a bolt, the bolt of which passes through the first mounting hole 140 and is threadedly engaged with the second mounting hole 401.

[0171] In the above scheme, by setting the first mounting hole 140 and the second mounting hole 401, the battery 100 can be connected to the bracket 400 in a mounting manner. On the one hand, it can improve the efficiency of assembling the battery 100 on the bracket 400. On the other hand, it enables the electrical device to be recharged by replacing the battery, so that the electrical device has a faster energy recharge efficiency.

[0172] According to some embodiments of the present application, the mounting member 20 is rotatably disposed in the first mounting hole 140 , and the mounting member 20 is configured to be locked or unlocked to the bracket 400 by rotation.

[0173] In some embodiments, the mounting member 20 can be rotated by a manipulator or other device, thereby changing the posture of the mounting member 20, so that the mounting member 20 can be locked to the bracket 400 or unlocked to the bracket 400, thereby achieving assembly or detachment of the battery 100 and the bracket 400.

[0174] In some embodiments, the second mounting hole 401 is non-centrally symmetrical, with one dimension being larger. The mounting member 20 can be rotated to coincide with or offset the second mounting hole 401. When the mounting member 20 coincides with the second mounting hole 401, it can be unlocked from the bracket 400. When the mounting member 20 is offset from the second mounting hole 401, it can be locked to the bracket 400.

[0175] In some embodiments, the mounting member 20 may be a threaded structure that can be threadedly connected to the second mounting hole 401 of the bracket 400 .

[0176] In the above solution, by rotating the mounting member 20 , the battery 100 can be locked or unlocked on the bracket 400 , so that the battery 100 can be quickly replaced to increase the energy charging efficiency of the electrical device.

[0177] According to some embodiments of the present application, see Figures 5 and 9 . The second connecting surface 14 includes a first region 141 and a second region 142. The first region 141 protrudes from the second region 142 and is closer to the chamber than the second region 142. The mounting member 20 includes a rod 21 and at least two mounting portions 22. The mounting portions 22 protrude radially from the rod 21, and the second mounting hole 401 allows the mounting portions 22 to pass through. When the mounting member 20 is locked to the bracket 400, at least one mounting member 20 and the first region 141 cooperate to clamp the bracket 400.

[0178] In some embodiments, the second connecting surface 14 includes a first region 141 and a second region 142, with the second region 142 being located outside the housing 10 relative to the first region 141. The edge of the second region 142 facing away from the first connecting surface 13 is at least a portion of the outer edge of the first housing 11. There may be multiple first regions 141, each of which protrudes from the second region 142 toward the inside of the housing 10. The first connecting surface 13 is provided with a first connector 130, which connects the first housing 11 to the second housing 12. Each first region 141 is located between two adjacent first connectors 130.

[0179] The rod body 21 is rotatably arranged in the first mounting hole 140, and the hanging portion 22 is protruded from the rod body 21 along the radial direction of the rod body 21. When the battery 100 is moved upward, the hanging portion 22 coincides with the second mounting hole 401 and can pass through the second mounting hole 401. By rotating the rod body 21, the hanging portion 22 is rotated, so that at least one hanging portion 22 is misaligned with the second mounting hole 401 so as to be able to overlap with the bracket 400, so that the at least one hanging portion and the first area 141 can cooperate to clamp the bracket 400.

[0180] In the above scheme, by providing a first area 141 that protrudes toward the inner side of the box body 10 and is located between two adjacent first connecting parts, and the first area 141 can cooperate with the mounting part 20 to clamp the bracket 400, the mounting part 20 can be made not to interfere with the connecting component between the first box body 11 and the second box body 12, thereby improving the space utilization of the box body 10 and making the overall structure of the battery 100 compact so as to have a higher volume energy density.

[0181] According to some embodiments of the present application, a battery 100 is provided, see Figures 2 to 10 .

[0182] Battery 100 can be used in a vehicle and can be placed under the vehicle frame via bracket 400. Battery 100 includes a housing 10, which includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are connected to each other along a first direction z, together defining a chamber for accommodating battery cells.

[0183] The box body 10 is square, with the first box body 11 being the lower box body 10 and the second box body 12 being the upper cover. The first box body 11 includes a bottom wall, two first walls 110 opposing each other along a second direction x, and two second walls 111 opposing each other along a third direction y. The first walls 110 and the second walls 111 are adjacently disposed and are respectively disposed at the edges of the bottom wall.

[0184] A first connecting surface 13 and a second connecting surface 14 are formed on the side of the first housing 11 facing the second housing 12. The first connecting surface 13 is annular and includes a first sub-connecting surface 13a and a second sub-connecting surface 13b that are interconnected. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111. Each of the four edges of the second housing 12 is provided with flanges 121. The four flanges 121 overlap the first wall 110 and the second wall 111, respectively, and correspond to the first sub-connecting surface 13a and the second sub-connecting surface 13b. The four flanges 121 are connected to the first connecting surface 13 via a first connector 130. The second connecting surface 14 is formed on the first wall 110 and is located outside the first connecting surface 13. In the first direction z, the second connecting surface 14 extends beyond the first connecting surface 13. The second connection surface 14 is formed with a first mounting hole 140 . The mounting member 20 can pass through the first mounting hole 140 to mount the battery 100 on a vehicle.

[0185] The first connecting surface 13 is connected to the second connecting surface 14 via a transition surface 15. The first connecting surface 13, the second connecting surface 14, and the transition surface 15 collectively define a receiving groove 16. The first connecting member 130 is received in the receiving groove 16, and the first connecting member 130 does not extend beyond the second connecting surface 14. A drainage groove 170 is formed in the first wall 110. The drainage groove 170 extends through the transition surface 15 and the outer side surface of the first wall 110, thereby connecting the outside world to the receiving groove 16. When the vehicle is started, liquid accumulated in the receiving groove 16 can be drained through the drainage groove 170 due to the vibration of the vehicle.

[0186] In the above scheme, by setting the first connecting surface 13 and the second connecting surface 14 to non-overlapping positions in the first direction z, the connecting interface between the first box body 11 and the second box body 12 of the battery 100 and the connecting interface between the battery 100 and the bracket 400 can be vertically offset. On the one hand, it can effectively reduce the risk of interference between the battery 100 itself and the bracket 400 due to the small distance between the two connecting interfaces, or interference between the battery 100 itself and the equipment performing the assembly action, thereby increasing the difficulty of assembling the battery 100 and the bracket 400 and affecting the assembly efficiency of the battery 100 and the bracket 400; on the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface 14, by vertically offsetting the two connecting interfaces, the additional lateral space occupied by the second connecting surface 14 can be effectively reduced, that is, the utilization rate of the lateral space of the box body 10 is improved, and more battery cells can be loaded in the box body 10, so that the battery 100 has a higher volume energy density. At the same time, by providing the drainage groove 170 on the first wall 110, the accumulated liquid in the receiving groove 16 can be effectively drained, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, so that the battery 100 has higher reliability.

[0187] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery configured to be connected to a bracket, wherein: include: A box body, the box body comprising a first box body and a second box body, the first box body and the second box body being connected to each other along a first direction, the first box body and the second box body jointly defining a chamber for accommodating a battery cell; The first box body has a first connecting surface and a second connecting surface facing the first direction, the first connecting surface is connected to the second box body, and the second connecting surface is used to connect to the bracket; The first connecting surface and the second connecting surface do not overlap in positions in the first direction.

2. The battery according to claim 1, wherein The second connecting surface is farther away from the cavity than the first connecting surface.

3. The battery according to claim 2, wherein Along the direction from the first box body to the second box body, the second connecting surface exceeds the first connecting surface.

4. The battery according to claim 3, wherein The first connecting surface is provided with a first connecting member, and the first connecting member is connected to the second box body; Along the direction from the first box body to the second box body, the first connecting member does not extend beyond the second connecting surface.

5. The battery according to claim 4, wherein The first connecting surface is arranged along the circumference of the opening of the first box body. There are multiple first connecting members, and the multiple first connecting members are arranged at intervals along the circumference of the opening.

6. The battery according to claim 5, wherein The second connection surface is provided with a first mounting hole, and the first mounting hole is used for a mounting member to pass through to be connected to the bracket.

7. The battery according to claim 6, wherein The second connecting surface includes a first area and a second area, the first area is protruding from the second area, the first area is closer to the cavity than the second area, and the first area protrudes from the second area and is located between two adjacent first connecting members; At least a portion of the first mounting hole is located in the first area.

8. The battery according to claim 7, wherein The second box is formed with a relief portion for avoiding the first area.

9. The battery according to any one of claims 3 to 8, wherein: The first box body further has a transition surface, and the first connecting surface and the second connecting surface are connected via the transition surface; The first connecting surface, the second connecting surface and the transition surface jointly define a receiving groove, and the first box body is provided with a drainage portion communicating with the receiving groove and the outside.

10. The battery according to claim 9, wherein The drainage portion includes a drainage groove. Along the second direction, one end of the drainage groove passes through the transition surface, and the other end of the drainage groove passes through the outer surface of the first box body. The first direction and the second direction are perpendicular to each other.

11. The battery according to claim 10, wherein Along the first direction, the drainage groove extends from the first connecting surface to the second connecting surface.

12. The battery according to claim 10 or 11, wherein The width of the drainage groove is w, which satisfies 4mm≤w≤15mm.

13. The battery according to any one of claims 1 to 12, wherein: The first box body includes two first walls opposite to each other along a second direction and two second walls opposite to each other along a third direction, the first walls and the second walls are adjacent to each other, and the first direction, the second direction and the third direction are perpendicular to each other. The first connection surface includes a first sub-connection surface and a second sub-connection surface connected to each other. The first sub-connection surface is formed on the first wall, and the second sub-connection surface is formed on the second wall.

14. The battery according to claim 13, wherein The second connecting surface is formed on the first wall.

15. The battery according to claim 14, wherein The length dimension of the first wall is greater than the length dimension of the second wall.

16. An electrical device, wherein: include: The device body has a bracket; The battery according to any one of claims 1 to 15, wherein the battery is connected to the device body via the bracket, and the battery is used to provide electrical energy to the device body.

17. The electrical device according to claim 16, wherein: The second connecting surface is provided with a first mounting hole, and the bracket is provided with a second mounting hole. The first mounting hole and the second mounting hole are provided correspondingly. The battery is mounted on the bracket by passing through the first mounting hole and the second mounting hole through a mounting member.

18. The electrical device according to claim 17, wherein: The mounting member is rotatably disposed in the first mounting hole, and the mounting member is configured to be locked or unlocked to the bracket by rotating.

19. The electrical device according to claim 18, wherein: The second connecting surface includes a first area and a second area, the first area is protruding from the second area, and the first area is closer to the cavity than the second area; The mounting member includes a rod body and at least two mounting portions, the mounting portions are protruded from the rod body along the radial direction of the rod body, and the second mounting hole is for the mounting portions to pass through; wherein, when the mounting member is locked to the bracket, at least one of the mounting members and the first area cooperate to clamp the bracket.

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